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A bag consists of 4 different colored marbles. The probability of drawing each is as follows:

 P (Blue)=. 4 P (Red)= .2 P (Purple)= .3 P (Black)= .1

 

You draw a marble out of the bag and then replace it.

 

What is the probability that you draw:

 

a. A red marble first and a blue marble second?

.2 * .4 = 8%

b. A black marble first and a purple marble second?

.1 * .3 = 3%

c. A red or blue marble?

.2 + .4 = 60%

d. A gray marble?

0

 

Are these answers correct?

 Feb 23, 2019
 #1
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all correct

 Feb 23, 2019

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